I have found my IAM api credentials (I think) for my instance which include apikey, iam_apikey_description, iam_apikey_name amongst others. I copy and pasted these in my call for to VisualRecognitionV3 but it still returns the error:

'You must specify your IAM api key or username and password service '
ValueError: You must specify your IAM api key or username and password service credentials (Note: these are different from your Bluemix id)

Can anybody tell me exactly where/how I should place my IAM credentials and how I should call the service? I did look at the documentation but it relates to the old api key. I've had a look in Github too and all Python scripts for Watson Visual Recognition seem to contain the old api key format.